Yes. You can have different Dashlane accounts on the same computer and keep all your data separate and private.
In fact, when several people share a computer, Dashlane helps each person keep their passwords, login details, IDs, credit cards, and Secure Notes private.
People can easily switch from one account to another. In the web app, open the My account menu, and select Log out. You'll be logged out of your Dashlane account. In the extension, select More in the top menu and select Log out at the bottom of the extension.
Then the next person can log in by selecting the orange Dashlane D in the browser's toolbar. Select the arrow icon next to the previous person's email address to choose the correct account from the menu.
Finally, don't forget to log out when you're finished using Dashlane on a shared computer.